91st Regiment

91st Regiment or 91st Infantry Regiment may refer to:

• 91st Regiment of Foot (disambiguation), several units of the British Army
• 91st Punjabis (Light Infantry), a unit of the British Indian Army
• 91st Cavalry Regiment, United States
• 91st Coast Artillery (United States)

Union Army (American Civil War):

• 91st Illinois Volunteer Infantry Regiment
• 91st Indiana Infantry Regiment
• 91st New York Volunteer Infantry Regiment
• 91st Ohio Infantry
• 91st Pennsylvania Infantry

See also

• 91st Division (disambiguation)